This equation shows a reaction that may be reversed by altering the conditions. anhydrous cobalt(II) chloride + water $\rightleftharpoons$ hydrated cobalt(II) chloride. Which of the following statements is correct?
- AWhen anhydrous cobalt(II) chloride is heated, water vapour is produced.
- BBlue cobalt(II) chloride paper turns pink when placed in water vapour.
- CAnhydrous cobalt(II) chloride paper is pink and turns blue when placed in water.
- DThe colour changes from blue to pink when hydrated cobalt(II) chloride is heated.